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1. United States Non-Attainment Areas: Carbon Monoxide, 2008

2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Carbon Monoxide is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality ... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).

2. United States Non-Attainment Areas: Lead, 2008

2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Lead is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality Standard fo... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).

3. United States Non-Attainment Areas: Nitrogen Dioxide, 2008

2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Nitrogen Dioxide is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).

4. United States Non-Attainment Areas: Ozone, 2008

2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Ozone is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality Standard f... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).

5. United States Non-Attainment Areas: Particulate Matter 10, 2008

2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Particulate matter 10 is a polygon theme representing areas in the United States that do not meet the National Ambient Air Qu... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).

6. United States Non-Attainment Areas: Particulate Matter 2.5, 2008

2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Particulate matter 2.5 is a polygon theme representing areas in the United States that do not meet the National Ambient Air Q... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).

7. United States Non-Attainment Areas: Sulfur Oxides, 2008

2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Sulfur Oxides is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality St... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).